The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 1985
Filed:
May. 26, 1982
Kazuya Matsumoto, Yokohama, JP;
Kiyonobu Endo, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a magnetooptic reproducing device wherein a light beam polarized in a predetermined direction is incident on a magnetic recording medium and signals recorded on the recording medium are optically read by the utilization of the magnetooptic effect, a polarization component of the signal light from the recording medium in a direction perpendicular to a polarization component in the predetermined direction is relatively increased as compared with the latter component, thereby enhancing the utilization efficiency of the signal light in detection and enabling detection of great S/N ratio or observation of a recorded pattern of high visibility. Also, signal recording as well as reproducing can be accomplished by one common optical system.